PHP - Strings and Parser Method

• They are sequences of characters, like "PHP supports string operations". 

NOTE: Built-in string functions is given in function reference PHP String Functions. 

Following are valid examples of string:

$string_1 = "This is a string in double quotes";
$string_2 = "This is a somewhat longer, singly quoted string";
$string_39 = "This string has thirty-nine characters";
$string_0 = ""; // a string with zero characters

Example:

The escape-sequence replacements are −

• \n is replaced by the newline character
• \r is replaced by the carriage-return character
• \t is replaced by the tab character
• \$ is replaced by the dollar sign itself ($)
• \" is replaced by a single double-quote (")
• \\ is replaced by a single backslash (\)

String Concatenation Operator:

• To concatenate two string variables together, use the dot (.) operator.

Example:

Using the strlen() Function:

• The strlen() function is used to find the length of a string.

Example:

Using the strpos() Function:

• The strpos() function is used to search for a string or character within a string.

Example:

PHP Parser:

• Specifically is part that reads human-readable representation of code to generate parse tree and later opcode representation of code that can be interpreted by php interpreter.

Example :

• I have taken Stona FIGSI'16 < www.stonafigsi.com > website menu bar for doing string manipulation using parser method and extracting the text from source code.

Output Generated: